Well it largely depends on by what you mean as rain.
I will admit that tornadoes can make it for a short time, rain all sorts of things in the sense that it picks them up, and they "rain" down.
However for it to rain rocks as if it was water on earth, is not possible on Earth, as it doesn't get hot enough for that. That is what I was referring to-otherwise, you could just gather a bunch of drunkards, hand them all rocks and tell them to toss them upwards. For the next moment, it will rain rocks.
I admit, I did not clarify it properly in my first post. Going by the first example yes it can rain just about anything with a tornoado. Could rain cat's and dogs or rain men. In the example I meant, no it can't rain rocks like that on Earth. Apologies for any confusion.
Back on the topic, feel free to try to convince me that your ideas and beliefs are in fact well thought out, and can work and do more good then harm. Until I'm convinced I will never accept them. It's fine if you decide to not bother convincing me, I long abandoned any hope of convincing you, though I'm a stubborn old hag who likes to blabber